Try to relax as much as possible. Under the circumstances, it is extremely hard and understandable.
Take a warm bath with epson salts... lay down on your left side, drink plenty of clear fluids. Stress is definitely something that can bring on labour. You are 37 weeks 4 days by your ticker, so if it is labour, baby will do just fine!!!
Talk to your MW about it though, they might have a mild sedative that might help you relax a little bit.
Good luck hun.